14 PASSALIDJ3. 



59. PASSALUS pugionatus. 



Passalus pugionatus, Burm. Handb. v. 489. 42. 

 Hob. Columbia. 



60. PASSALUS suturalis. 



Passalus suturalis, Burm. Handb. v. 485. 35. 

 Hab. Columbia. 



61. PASSALUS crassus. B.M. 

 Passalus crassus, Guerin, MSS. ? 



Very convex, black, smooth and shining ; the mandibles por- 

 rect, slightly curved, very stout and deeply excavated within, bi- 

 dentate at their apex, the left mandible having two and the right 

 one tooth at the middle of its inner margin ; the labrum slightly 

 emarginate ; the clypeus produced, its anterior margin waved ; 

 on the vertex is a single erect tubercle, from the base of which 

 pass forward elevated carinse, which terminate in small tubercles 

 before reaching the margin of the clypeus ; from the tubercles 

 at right angles is a transverse ridge ; the usual longitudinal ele- 

 vations within the margins of the eyes are rounded above, and 

 extend from the vertex to the anterior margin of the head; 

 within these lateral elevations are deep smooth pits. Thorax 

 transverse, all its margins rounded, the central channel not 

 reaching the anterior margin ; about the middle, at its lateral 

 margins, is a smooth fossulet ; the elytra deeply striate ; the 

 lateral striae delicately punctured. 



Hab. Columbia. 



62. PASSALUS Sagittarius, n. s. PI. I. fig. 2. B.M. 



Convex, black, smooth and shining; the mandibles short, 

 stout, and armed at their apex with three obtuse teeth, and also 

 having a large obtuse one in their middle within ; the inner ex- 

 cavation of the mandibles smooth and shining ; from the centre 

 of the head behind, on a line with the vertex of the eyes, rises a 

 tubercle which projects forwards, forming an obtuse horn the 

 usual lateral tubercles at the base are nearly obsolete the 

 apex of the horn projects a little beyond the margin of the cly- 

 peus, which is entire, or faintly notched in the centre; from the 

 base of the projecting horn pass forwards divergent elevated 

 carinse, which form obtuse tubercles at the margin of the clypeus, 

 and also a smaller intermediate one : the three apical joints of 

 the antennae have elongate lamellae : the labrum has deep 

 scattered punctures, and is emarginate in front. Thorax trans- 

 verse, having a deep central dorsal channel, a rounded fovea to- 



